Radical assumption: Restricting greenhouse gas emissions will increase the size of government.
Counterpoint: According to libertarians, the purpose of government is to protect rights to life, liberty, property, and the pursuit of happiness. If greenhouse gas emissions infringe on those considerations (as they most assuredly do if the scientific consensus regarding climate change is correct), libertarian principles demand that government should act to enjoin those rights violations.
Actual platform —
The parties responsible for pollution should be held liable.
Private landowners and conservation groups have a vested interest in maintaining natural resources.
I’m curious what your “Actual platform” means to you. What do those statements mean for the role of government?